rwsem_acquire 458 include/linux/lockdep.h # define rwsem_acquire(l, s, t, i) lock_acquire(l, s, t, 0, 2, NULL, i) rwsem_acquire 461 include/linux/lockdep.h # define rwsem_acquire(l, s, t, i) lock_acquire(l, s, t, 0, 1, NULL, i) rwsem_acquire 466 include/linux/lockdep.h # define rwsem_acquire(l, s, t, i) do { } while (0)